Watson R M, Bhatia S N
Department of Prosthetic Dentistry, King's College School of Medicine and Dentistry, University of London, U.K.
J Oral Rehabil. 1989 Mar;16(2):139-53. doi: 10.1111/j.1365-2842.1989.tb01327.x.
A comparison of tooth positions and soft tissue profiles was made between samples of edentulous patients recently provided with new complete dentures, and dentate subjects. The dentures were marked with lead foil on the most prominent incisor teeth and labial surfaces of the flanges. Lateral skull radiographs were made with the jaws in centric relation. The dentate subjects were recorded with the teeth held in centric occlusion. Discrete soft and hard tissue landmarks were identified and recorded using an interactive on-line computer system, enabling linear and angular measurements to be made. A mathematical comparison was produced employing a series of independent t-tests. Composite computer tracings were also produced. Important differences were found between the two groups, in which the influence of the upper lip length, mandibular resorption, and selected overbite were identified as factors determining artificial tooth position.
对近期佩戴新全口义齿的无牙颌患者样本与有牙颌受试者的牙齿位置和软组织轮廓进行了比较。在最突出的切牙和义齿基托唇面用铅箔做标记。在颌骨处于正中关系时拍摄头颅侧位片。有牙颌受试者在牙齿正中咬合时进行记录。使用交互式在线计算机系统识别并记录离散的软组织和硬组织标志点，从而进行线性和角度测量。采用一系列独立t检验进行数学比较。还制作了复合计算机描图。发现两组之间存在重要差异，其中上唇长度、下颌吸收和选定的覆合的影响被确定为决定人工牙位置的因素。
